Quote Originally Posted by esmiswg View Post
When your tool is flagging items as duped that are made with the same factory run of *crafted components* where a single one of those components got duped on a completely separate account, then your tool does not meet the specification of correctly detecting duped items. It needs more time and additional information taken into account to even work right.
Trust me it is no where near that simple in implementation, it's 1,300 lines of code just for the part that flags the items. I appreciate the complexities are not obvious, but we have spent a lot of time looking at the edge cases here.

I will not go into the details of the exploit, however there were a number of "artifacts" that could be used as a seed.

The system that does the tagging has 8 separate phases that unpack each level of detail to match items, not just a simple s/n counter.

If we just sorted based on s/n's we would have flagged 100 million items.

That said when you do see a s/n with thousands of copies and its a loot item not a manufactured item, pretty clear what happened there.